European Rugby Cup have confirmed the venues for this season's Heineken Cup semi-finals.

Stade de la Mosson in Montpellier will stage the opening last-four clash on Saturday, April 27, with the winner of this weekend's quarter-final between Clermont Auvergne and Montpellier playing host to the victor of the Harlequins v Munster clash.

The 32,000-capacity ground is the home of the city's Ligue 1 football club and this will mark the first time it has staged a Heineken Cup knockout match, although it was the venue for Montpellier's pool stage meeting with Leinster last season.

The second semi-final will be held at either Twickenham or the Aviva Stadium on Sunday, April 28. The venue will be determined by the winner of the Saracens v Ulster last-eight meeting, with the victors facing Toulon or Leicester.